Features: High efficiency PTFE pneumatic fitting PC4 M6 ensures 30% faster material transfer with 4 2.5mm tubing compatibility, minimizing airflows loss for uninterrupted 3D printing operations. Constructed with durability metal plastic this connectors withstands 60°C to 260°C temperatures and offers 50% greater abrasion resistance than standard plastic fittings. Ideal for professional 3D printing enthusiasts and industrial users requiring reliable pneumatic connection during fast speed printing or frequent filaments changes. Perfectly integrates with 3D printers and drying box to prevent clogs even in extreme workshop environment. Easy installation design simplifies maintenance across DIY and commercial setups, making it essential for optimizing printing workflows with PTFE tubing systems. Specifications: Size: PC4-M6 specifications Properties: Direct-through pneumatic joint Feed pipe parameters: 4x2.5mm Use scenario: 3D printer, pneumatic equipment, mechanical connection Practicality: heat resistance, corrosion resistance, low frictions to ensure smooth flows of fluid Package Includes: 4piece set of PTFE feed pipe pneumatic joints note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution